You can always have a grand opening. It doesn’t matter how long you have been open, having a grand opening and posting the event seems to bring people in, they are curious as to what may be different. Keeping in mind that many may be looking for something free, which does not have to break you. You can create any atmosphere that is comfortable for you, like welcoming guests to you home. Decorate a little to peak curiosity. Promote your best items, you could serve free coffee, tea and cookies. Greet your guests and welcome them to your home. They will have a feeling of family which promotes coming back to visit.